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   <div id="projectname">New LiquidCrystal library
   &#160;<span id="projectnumber">1.3.2</span>
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   <div id="projectbrief">Generic LCD control library</div>
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<div class="title">/Users/fmalpartida/Documents/development/mercurial repos/SW/NewliquidCrystal/LiquidCrystal_SR1W.h</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// ---------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// Created/Adapted by Stephen Erisman 2013-07-06</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Copyright 2013 - Under creative commons license 3.0:</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">//        Attribution-ShareAlike CC BY-SA</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// This software is furnished &quot;as is&quot;, without technical support, and with no </span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// warranty, express or implied, as to its usefulness for any purpose.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// @file LiquidCrystal_SR1W.h</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// Connects a hd44780 LCD using 1 pin from the Arduino, via an 8-bit Latching</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// ShiftRegister (SR1W from now on).</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">// </span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">// @brief </span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">// This is the 1 wire shift register interface class for the LCD library</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">// The functionality provided by this class and its base class is a superset of</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">// the original functionality of the Arduino LiquidCrystal library and can</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">// be used as such.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">// See the LCD class for a full description of the API functions available.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">// It works with a 8-bit latched, no-tristate, unidirectional SIPO (Serial-In-Parallel-Out)</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">// shift register, and an hd44780 LCD in 4-bit mode.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">// The 74HC595 shift register has been tested.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// 1 Pin required from the Arduino:</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">// - Serial PIN:</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">//    The Serial PIN is wired directly to the shift register&#39;s Clock PIN and its</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">//    unaltered signal directly triggers the Clock on every LOW to HIGH transition.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment">//    Additionally, the Serial PIN is wired through a resistor capacitor (RC) filter to</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">//    the shift register&#39;s Data PIN.  During a quick transition of the Serial PIN the</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">//    RC filter will maintain the Data PIN&#39;s previous value because the capacitor isn&#39;t</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">//    given enough time to charge (or discharge) to the alternate state.  If the transition</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">//    is held for enough time, however, the RC capacitor will charge (or discharge) and the</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">//    value seen by the Data PIN will have changed state.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">//    There are two circuit versions that behave differently for Latch, Enable, and Clear:</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">//  HW_CLEAR version:</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">//    In this version the shift register&#39;s Latch and LCD&#39;s Enable PINs are wired directly to</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">//    the shift register&#39;s Q&#39;H output.  The shift register&#39;s /Clear PIN is then wired up</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">//    through two logic &quot;gates&quot;: first QH and Q&#39;H are AND&#39;d together with a diode-resistor</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">//    &quot;gate&quot; the output of which is NAND&#39;d with VCC using a resistor-NPN-resistor &quot;gate&quot;.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">//    So, /CLR = ((QH AND Q&#39;H) NAND VCC).  We also put a capacitor on the NPN base to GND</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">//    to delay the signal a bit and allow the Latch and EN signals some extra time to trigger.</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">//    </span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">//    This all fits together as follows:</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">//      1. We shift in a &#39;1&#39;.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">//      2. Ws shift in the other 7 bits.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">//      3. At this point the first &#39;1&#39; has been shifted into Q&#39;H causing it to go HIGH.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">//      4. When Q&#39;H is HIGH it causes Latch and EN to also go HIGH.</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">//      5. When Latch transitions to HIGH it changes the shift register outputs to the bits</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">//         that were shifted in.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">//      6. This causes QH to go HIGH (if it wasn&#39;t already).</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">//      7. Now that QH AND Q&#39;H are both HIGH they causes the base capacitor to start charging.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">//      8. When the capacitor has charged enough the transistor brings /CLR LOW.</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">//      8. This will cause /CLR to trigger and the shift register will be cleared</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment">//         (NOTE: This doesn&#39;t change the latched outputs)</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">//      9. The clearing of the shift register causes Q&#39;H to go LOW.</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">//      9. When Q&#39;H is LOW it causes Latch and EN to also go LOW.</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">//      10. When EN transitions to LOW the LCD reads in the bits on the shift register pins</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment">//          and does it&#39;s thing.</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">//      11. Now that Q&#39;H is LOW the base capacitor starts discharging.</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">//      12. When the capacitor has discharged enough the transistor will stop sinking /CLR.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">//      13. This will cause /CLR to be pulled back up to HIGH by the VCC pullup resistor</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">//          (it will stay that way until our next nibble/byte has been shifted in)</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">//      14. We are now ready for our next nibble/byte.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">//  SW_CLEAR version:</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">//    In this version the Serial PIN is wired to the shift register&#39;s Latch and LCD&#39;s Enable</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment">//    PINs through another RC filter.  These PINs are also wired through a diode (AND &quot;gate&quot;)</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">//    tied to the shift register&#39;s Q&#39;H output.  This combination means that the Latch and</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">//    Enable PINs will be held LOW as long as EITHER the Q&#39;H or RC output is LOW.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment">//    This all fits together as follows:</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment">//      1. We shift in a &#39;1&#39;.</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">//      2. We shift in the other 7 bits. (NOTE: We leave Serial PIN HIGH at the end of this)</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">//      3. At this point the first &#39;1&#39; has been shifted into Q&#39;H causing it to go HIGH.</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">//         (NOTE: Up until this time Q&#39;H has been LOW so the attached diode has been keeping</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">//          the Latch/EN pins LOW.)</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">//      4. Now that Q&#39;H is HIGH it causes the attached diode to stop discharging the Latch/EN</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">//         capacitor.  We delay here for a while to make sure it is fully charged.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">//      5. When the capacitor has charged enough Latch/EN will be HIGH</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">//      5. When Latch transitions to HIGH it changes the shift register outputs to what was</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">//         shifted in.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment">//      6. We now bring the Serial PIN LOW and wait for the Latch/EN capacitor to discharge.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">//      7. When the capacitor has discharged enough Latch/EN will be LOW</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">//      8. When EN transitions to LOW the LCD reads in the bits on the shift register pins</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="comment">//         and does it&#39;s thing.</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment">//      9. We now shift in &#39;0&#39; 8 times (as quickly as possible).</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">//      10. If we keep the LOW to HIGH to LOW pulses short enough while shifting in the &#39;0&#39;s</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">//          the Latch/EN capacitor won&#39;t have time to charge to a point where it will re-trigger</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">//          the Latch/EN pins.</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">//      11. Now Q&#39;H will be LOW and the shift register has been cleared (NOTE: This doesn&#39;t</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment">//          change the latched outputs.)</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment">//      12. We now bring the Serial PIN HIGH again and wait for the Data capacitor to recharge.</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">//      13. When the Data capacitor has fully charged we are ready for our next nibble/byte.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">// These designs incorporate (and merge) ideas originally found here (1-wire concept):</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">//   http://www.romanblack.com/shift1.htm</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment">// and here (diode-resistor AND &quot;gate&quot; EN control):</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment">//   http://www.rentron.com/Myke1.htm</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">// as well as introducing some new and original ideas (particularly how HW_CLEAR works).</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">// Because of its use of the diode AND &quot;gate&quot;, the SW_CLEAR design allows for faster sending</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">// of data to the LCD compared to Roman&#39;s original design.  With the proposed 5uS delay (see</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment">// notes below), a byte can be sent to the LCD in as little as 30 uS (plus overhead) when</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment">// sending all 1&#39;s. This increases to as much as 190 uS (plus overhead) when sending all 0&#39;s.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment">// This is in comparison to Roman&#39;s estimate of around 3-4 mS to send a byte. So this</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="comment">// implementation is 15-133 times faster for the cost of a single (1N4148 or similar) diode.</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="comment">// The HW_CLEAR version is even faster as it can completely eliminate the clearSR() call as</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="comment">// well as the delays that are needed to latch the data in the SW_CLEAR version.</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment">// Default Shift Register Bits - Shifted MSB first:</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">// Bit #0 (QA) - not used</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment">// Bit #1 (QB) - connects to LCD data input D7</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="comment">// Bit #2 (QC) - connects to LCD data input D6</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="comment">// Bit #3 (QD) - connects to LCD data input D5</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="comment">// Bit #4 (QE) - connects to LCD data input D4</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">// Bit #5 (QF) - optional backlight control</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment">// Bit #6 (QG) - connects to RS (Register Select) on the LCD</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">// Bit #7 (QH) - used for /CLR on the HW_CLEAR version (cannot be changed)</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment">//        (Q&#39;H) - used for Latch/EN (via the diode AND &quot;gate&quot;) (cannot be changed)</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">// NOTE: Any of these can be changed around as needed EXCEPT Bit #7 (QH and Q&#39;H).</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="comment">// Circuit Types (for the 74HC595)</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment">// -------------------------------</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment">// The 74HC595 is a latching shift register.  See the explanations above for how these circuits</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">// work.</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="comment">// HW_CLEAR version: (Faster but higher part count)</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="comment">// ------------------------------------------------</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="comment">//                         74HC595     (VCC)</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="comment">//                       +----u----+     |        2.2nF</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment">// (LCD D7)------------1-|QB    VCC|-16--+    +----||----(GND)</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">// (LCD D6)------------2-|QC     QA|-15       |</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="comment">// (LCD D5)------------3-|QD    SER|-14-------+--[ Resistor ]--+</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">// (LCD D4)------------4-|QE    /OE|-13--(GND)     1.5k        |</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="comment">// (BL Circuit)--------5-|QF    RCK|-12-----+                  |</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment">//                       |         |         \                 |</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment">// (LCD RS)------------6-|QG    SCK|-11-------)----------------+--(Serial PIN)</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="comment">//                       |         |          |</span></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="comment">//             +-------7-|QH   /CLR|-10-------)--+--[ Resistor ]--(VCC)</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="comment">//             |         |         |         /   |       1k</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="comment">//             |    +--8-|GND   Q&#39;H|--9-----+    |</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;<span class="comment">//             |    |    +---------+        |    |         (GND)--(LCD RW)</span></div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;<span class="comment">//             |    |      0.1uF            |     \</span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;<span class="comment">//             |  (GND)-----||----(VCC)     +------)--------------(LCD EN)</span></div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="comment">//             |                            |     /</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="comment">//             |----|&lt;|----+--[ Resistor ]--|    |</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="comment">//                 diode   |       1k            C</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="comment">//                         |                     |</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="comment">//                         +-------------+---B-|&gt; (NPN)</span></div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;<span class="comment">//                                       |       |</span></div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="comment">//                               (2.2nF) =       E</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="comment">//                                       |       |</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="comment">//                                     (GND)   (GND)</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;<span class="comment">// SW_CLEAR version: (Lower part count but slower)</span></div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="comment">// -----------------------------------------------</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="comment">//                         74HC595     (VCC)</span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="comment">//                       +----u----+     |          2.2nF</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="comment">// (LCD D7)------------1-|QB    VCC|-16--+      +----||----(GND)</span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="comment">// (LCD D6)------------2-|QC     QA|-15         |</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="comment">// (LCD D5)------------3-|QD    SER|-14---------+--[ Resistor ]--+</span></div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;<span class="comment">// (LCD D4)------------4-|QE    /OE|-13--(GND)         1.5k      |</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="comment">// (BL Circuit)--------5-|QF    RCK|-12---------+                |</span></div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="comment">//                       |         |             \               |</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="comment">// (LCD RS)------------6-|QG    SCK|-11-----------)--------------+--(Serial PIN)</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="comment">//                     7-|QH   /CLR|-10--(VCC)   /               |</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">//                  +--8-|GND   Q&#39;H|--9---|&lt;|---+--[ Resistor ]--+</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="comment">//                  |    +---------+     diode  |      1.5k</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment">//                  |                           |</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="comment">//                  |      0.1uF                |</span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="comment">//                (GND)-----||----(VCC)         +----||----(GND)</span></div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment">//                                              |   2.2nF</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="comment">// (LCD EN)-------------------------------------+</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="comment">// (LCD RW)--(GND)</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="comment">// In either case the LCD RW pin is hardwired to GND meaning we will only be able to write</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="comment">// to the LCD.</span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="comment">// Therefore, the Busy Flag (BF, data bit D7) is not able to be read and we have to make use</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="comment">// of the minimum delay time constraints.  This isn&#39;t really a problem because it usually</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="comment">// takes us longer to shift and latch the data than the minimum delay anyway.  For now, we</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="comment">// simply keep track of our delays and add more delay at the end to get to at least 37 uS.</span></div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="comment">// Backlight Control Circuit</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;<span class="comment">// -------------------------</span></div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="comment">// Since we are using the latching nature of the shift resiter we don&#39;t need the extra</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;<span class="comment">// backlight circuitry that SR2W uses.  Keeping it around, however, would still work because</span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="comment">// the circuit just slows down the transitions to the mosfet a bit.</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="comment">// Here are two more optimized versions that can be used.</span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="comment">// NPN Transistor version: (Cheaper but more power draw and higher part count)</span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="comment">// ---------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment">//                (value depends on LCD, 100ohm is usually safe)</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment">// (LCD BL anode)---[ resistor ]---(VCC)</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">// (LCD BL cathode)---------------+</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="comment">//                                C</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="comment">// (BL input)--[ Resistor ]---B-|&gt; (NPN)</span></div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="comment">//                  1k            |</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="comment">//                                E</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="comment">//                              (GND)</span></div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="comment">// NOTE: The Bate resistor is needed because the NPN is current fed.  For lower</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment">//       power draw, try a 10k resistor.</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="comment">// N-CH Mosfet version: (More costly but less power draw and lower part count)</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="comment">// ---------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="comment">//                (value depends on LCD, 100ohm is usually safe)</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="comment">// (LCD BL anode)---[ resistor ]---(VCC)</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="comment">// (LCD BL cathode)---------------+</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="comment">//                                D</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">// (BL input)----------------G-|-&lt; (2N7000 FET)</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="comment">//                                S</span></div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="comment">//                                |</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">//                              (GND)</span></div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">// NOTE: Gate resistor not needed because the mosfet is voltage fed and only really</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">//       pulls current while switching.</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment">// In either case, when the BL input is HIGH the LCD backlight will turn on.</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">// History</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment">// 2013.07.31 serisman - fixed potential interrupt bug and made more performance optimizations</span></div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">// 2013.07.10 serisman - more performance optimizations and modified the HW_CLEAR circuit a bit</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment">// 2013.07.09 serisman - added an even faster version that performs the clear in hardware</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">// 2013.07.08 serisman - changed code to shift data MSB first to match SR2W</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment">// 2013.07.07 serisman - major speed optimization</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">// 2013.07.06 serisman - created/modified from SR2W source to create SR1W</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="comment">// @author  S. Erisman - arduino@serisman.com</span></div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="comment">// --------------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="preprocessor">#ifndef _LIQUIDCRYSTAL_SR1W_</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="preprocessor">#define _LIQUIDCRYSTAL_SR1W_</span></div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="preprocessor">#include &lt;inttypes.h&gt;</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="preprocessor">#include &quot;LCD.h&quot;</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="preprocessor">#include &quot;FastIO.h&quot;</span></div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="comment">// 1-wire SR timing constants</span></div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="comment">// ---------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="comment">// NOTE:</span></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="comment">//  The 1.5k resistor (1.2k - 1.8k with a 20% tolerance)</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="comment">//   takes between 2.376uS and 4.36uS to fully charge or discharge</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="comment">//   the 2.2n capacitor (1.98n - 2.42n with a 10% tolerance).</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="comment">//  We round this up to a 5uS delay to provide an additional safety margin.</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="preprocessor">#define SR1W_DELAY_US       5</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="preprocessor">#define SR1W_DELAY()        { delayMicroseconds(SR1W_DELAY_US); numDelays++; }</span></div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="comment">// 1-wire SR output bit constants</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="comment">// ---------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="preprocessor">#define SR1W_UNUSED_MASK    0x01    // Set unused bit(s) to &#39;1&#39; as they are slightly faster to clock in.</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="preprocessor">#define SR1W_D7_MASK        0x02</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="preprocessor">#define SR1W_D6_MASK        0x04</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="preprocessor">#define SR1W_D5_MASK        0x08</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="preprocessor">#define SR1W_D4_MASK        0x10</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="preprocessor">#define SR1W_BL_MASK        0x20</span></div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="preprocessor">#define SR1W_RS_MASK        0x40</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;<span class="preprocessor">#define SR1W_EN_MASK        0x80    // This cannot be changed. It has to be the first thing shifted in.</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="preprocessor">#define SR1W_ATOMIC_WRITE_LOW(reg, mask)    ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { *reg &amp;= ~mask; }</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="preprocessor">#define SR1W_ATOMIC_WRITE_HIGH(reg, mask)   ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { *reg |= mask; }</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="keyword">typedef</span> <span class="keyword">enum</span> { SW_CLEAR, HW_CLEAR } t_sr1w_circuitType;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;</div>
<div class="line"><a name="l00299"></a><span class="lineno"><a class="line" href="class_liquid_crystal___s_r1_w.html">  299</a></span>&#160;<span class="keyword">class </span><a class="code" href="class_liquid_crystal___s_r1_w.html">LiquidCrystal_SR1W</a> : <span class="keyword">public</span> <a class="code" href="class_l_c_d.html">LCD</a></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;{</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;   <a class="code" href="class_liquid_crystal___s_r1_w.html#a33bff2c123d3dc42a829b0f8034912c9">LiquidCrystal_SR1W</a> (uint8_t srdata, t_sr1w_circuitType circuitType, </div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;                       t_backlighPol blpol = POSITIVE);</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;   </div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_liquid_crystal___s_r1_w.html#a7fc0b03977907b4d526a6b9e49a331b1">send</a>(uint8_t value, uint8_t mode);</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;   </div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;   </div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;   <span class="keywordtype">void</span> <a class="code" href="class_liquid_crystal___s_r1_w.html#a82d844569eb258559afb40ab354eb0a5">setBacklight</a> ( uint8_t mode );</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;   </div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;   </div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;   <span class="keywordtype">void</span> init ( uint8_t srdata, t_sr1w_circuitType circuitType, t_backlighPol blpol, </div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;               uint8_t lines, uint8_t font );</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;   </div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;   uint8_t clearSR ();</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;   </div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;   uint8_t loadSR (uint8_t val);</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;   </div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;   fio_register _srRegister; <span class="comment">// Serial PIN</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;   fio_bit _srMask;</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;   </div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;   t_sr1w_circuitType _circuitType;</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;   </div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;   uint8_t _blPolarity;</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;   uint8_t _blMask;</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;};</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="class_liquid_crystal___s_r1_w_html"><div class="ttname"><a href="class_liquid_crystal___s_r1_w.html">LiquidCrystal_SR1W</a></div><div class="ttdef"><b>Definition:</b> LiquidCrystal_SR1W.h:299</div></div>
<div class="ttc" id="class_l_c_d_html"><div class="ttname"><a href="class_l_c_d.html">LCD</a></div><div class="ttdef"><b>Definition:</b> LCD.h:187</div></div>
<div class="ttc" id="class_liquid_crystal___s_r1_w_html_a7fc0b03977907b4d526a6b9e49a331b1"><div class="ttname"><a href="class_liquid_crystal___s_r1_w.html#a7fc0b03977907b4d526a6b9e49a331b1">LiquidCrystal_SR1W::send</a></div><div class="ttdeci">virtual void send(uint8_t value, uint8_t mode)</div><div class="ttdef"><b>Definition:</b> LiquidCrystal_SR1W.cpp:194</div></div>
<div class="ttc" id="class_liquid_crystal___s_r1_w_html_a82d844569eb258559afb40ab354eb0a5"><div class="ttname"><a href="class_liquid_crystal___s_r1_w.html#a82d844569eb258559afb40ab354eb0a5">LiquidCrystal_SR1W::setBacklight</a></div><div class="ttdeci">void setBacklight(uint8_t mode)</div><div class="ttdef"><b>Definition:</b> LiquidCrystal_SR1W.cpp:235</div></div>
<div class="ttc" id="class_liquid_crystal___s_r1_w_html_a33bff2c123d3dc42a829b0f8034912c9"><div class="ttname"><a href="class_liquid_crystal___s_r1_w.html#a33bff2c123d3dc42a829b0f8034912c9">LiquidCrystal_SR1W::LiquidCrystal_SR1W</a></div><div class="ttdeci">LiquidCrystal_SR1W(uint8_t srdata, t_sr1w_circuitType circuitType, t_backlighPol blpol=POSITIVE)</div><div class="ttdef"><b>Definition:</b> LiquidCrystal_SR1W.cpp:40</div></div>
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